bonjour
Tom = x
Samuel = x + 2
Carole = x - 1
Sacha = 2 ( x - 1 ) = 2 x - 2
x + x + 2 + x - 1 + 2 x - 2 = 49
5 x = 49 + 1
5 x = 50
x = 10
Tom = 10 ans, Samuel 12 , Carole 9 et Sacha 18
glace = x
boisson = x - 1
entrée adulte = x + 4
entrée enfant = 4 ( x - 1 ) = 4 x - 4
Thomas = 2 ( x + 4 ) + 4 x - 4 + x - 1
= 2 x + 8 + 4 x - 4 + x - 1
= 7 x + 3
Clara = x + 4 + 4 x - 4 + 2 x
= 7 x
donc Thomas paiera plus cher
